Fire & Acoustic Mastic 300ml

£4.18 £3.48
In stock
Product Description

The Fire & Acoustic Sealant is a four hour rated, one part emulsion acrylic based, intumescent sealant which provides a firm yet flexible seal to joints in a variety of fire rated structures.

In suitably designed joints, this sealant will resist the passage of fire for up to four hours. The selected fillers used in this formation also make it suitable for use as an acoustic sealant.

We are happy to help with enquiries, stock availability or any technical help you require, however for security reasons we cannot take orders over the phone. So if you need to chat give us a call on 03301231761 or email us at [email protected].


  • No priming required for most construction substrates
  • For use in joints up to 50mm wide
  • Excellent acoustic properties for sound deadening
  • Non slump “ easy to apply and tool off
  • Fast cure “ tack free in 15 minutes
  • Overpaintable


  • Sealing joints, voids and irregular holes in fire walls, partitions and other structures; also for maintaining the integrity of pipes and cables that penetrate them
  • For internal perimeter pointing of fire rated door and window frames
  • Not for use on substrates that may bleed oils, solvents or plasticisers
  • Not for use where joints are constantly immersed in water, or as part of structural glazing systems
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More Information
Supplier Part Number10645879

Orders and Delivery

Free delivery if your order is over £300 ex VAT. Orders between £100 - £300 ex VAT will be subject to a delivery charge of £50 ex VAT. Please note, we are unable to accept orders less than £100 ex VAT

When ordering on line you can specify the date of delivery, however we would not be able to specify the time of delivery on that day.

• Please note that we have a number of large vehicles, including articulated vehicles that may be used for delivery. Please advise us in the comments on your order if access to the delivery address is limited.

• Due to insurance guidelines, delivery personnel are unable to enter private residences. Delivery will be as far as possible to the kerbside of the delivery address. The recipient of the products is responsible for any additional lifting once the delivery has been made. Please bear in mind that Insulation products can be bulky and / or heavy.

• The delivery driver will require a signature to confirm the goods have been received.

 † Unfortunately we, Insulation Express, cannot deliver to the Highlands & Islands of the UK. However we will be happy to deliver to a freight forwarding company on your behalf.


Returns and Refunds

In the unlikely event that you need to return an item, please contact our team on [email protected] within 14 days of accepting delivery of the item.

Restocking charges may apply. We will discuss this with you upon receipt of the cancellation request. Restocking charges will be applied where the products are no longer required AND NOT for goods returned because either defective or damaged.

We usually charge 30% of value (minimum £25.00).

Please note that we cannot accept returns on special orders. Special orders may consist of items sent via third party shipping companies or made to measure products. If you are unsure on whether or not your item is a special order, please contact us on [email protected] prior to placing the order.

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Free delivery on orders over £300! Terms and Conditions apply

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